22879438 has 4 divisors (see below), whose sum is σ = 34319160. Its totient is φ = 11439718.

The previous prime is 22879421. The next prime is 22879471. The reversal of 22879438 is 83497822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83497822 = 2 ⋅41748911.

It is a junction number, because it is equal to n+sod(n) for n = 22879394 and 22879403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5719858 + ... + 5719861.

It is an arithmetic number, because the mean of its divisors is an integer number (8579790).

Almost surely, 2^22879438 is an apocalyptic number.

22879438 is a deficient number, since it is larger than the sum of its proper divisors (11439722).

22879438 is a wasteful number, since it uses less digits than its factorization.

22879438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11439721.

The product of its digits is 193536, while the sum is 43.

The square root of 22879438 is about 4783.2455508786. The cubic root of 22879438 is about 283.8889253528. Note that the first 3 decimals are identical.

The spelling of 22879438 in words is "twenty-two million, eight hundred seventy-nine thousand, four hundred thirty-eight".